Purchase of goods from other state unregistered dealer

Hi
I run an ecommerce business and sell handicrafts/textiles/jewelry through our website. I go to various states across India and purchase goods that I resell through my website and through other online marketplaces. Now I often need to purchase stuff from small vendors or artists who are unregistered and they give us cash receipt. I then transport the goods purchased into my own state either by getting them with me or through some courier company.
Am I doing anything wrong by buying from unregistered dealers of other states? I mean how else would I be able to buy any handicrafts from small artists across India? Could anyone please guide me regarding this?

Thanks
Madhuri